Evidence of ion diffusion at room temperature in microcrystals of the Bi2Sr2CaCu2O8+delta superconductor

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dc.creatorTruccato, M.
dc.creatorLamberti, C.
dc.creatorPrestipino, C.
dc.creatorAgostino, A.
dc.date2005-06-08
dc.date.accessioned2026-07-07T03:05:31Z
dc.date.available2026-07-07T03:05:31Z
dc.descriptionWe have studied Bi-2212 microcrystals aged at ambient conditions for 40 days. Combined x-ray absorption near edge structure and x-ray fluorescence measurements with micrometer space resolution show both an increase of Cu$^{+}$ with respect to Cu$^{2+}$ and an enrichment in Cu vs Bi and Sr cation content near the sample edges in the b-axis direction. A parallel study on an electrically contacted sample has indirectly detected the O loss, observing both a resistivity increase and an increase in sample thickness near the edges. We conclude that the O out-diffusion along the b-axis is accompanied by Cu cation migration in the same direction.
dc.descriptionRevTeX 4, 10 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0506198
dc.identifierhttp://arxiv.org/abs/cond-mat/0506198
dc.identifierAppl. Phys. Lett. 86, 213116, (2005)
dc.identifierdoi:10.1063/1.1938251
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26482
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleEvidence of ion diffusion at room temperature in microcrystals of the Bi2Sr2CaCu2O8+delta superconductor
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